/* ==========================================================================
   易优游（北京）科技发展有限公司 · 官网样式
   主色取自品牌 LOGO 鱼身橙色 #DE5510
   ========================================================================== */

:root {
  --brand: #de5510;
  --brand-600: #c14609;
  --brand-700: #a03a06;
  --brand-400: #f07a3d;
  --brand-300: #f6a273;
  --brand-100: #fbe0d1;
  --brand-50: #fdf2ea;

  --ink: #14171a;
  --ink-2: #2b3138;
  --muted: #5b6570;
  --muted-2: #8a949e;
  --line: #eae5e0;
  --bg: #ffffff;
  --bg-alt: #faf7f4;
  --bg-dark: #16191d;

  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 1px 2px rgba(20, 23, 26, .05), 0 2px 8px rgba(20, 23, 26, .05);
  --shadow: 0 6px 24px rgba(20, 23, 26, .08);
  --shadow-lg: 0 18px 50px rgba(20, 23, 26, .13);
  --maxw: 1200px;
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
          system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  letter-spacing: .01em;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 { margin: 0; line-height: 1.28; font-weight: 700; letter-spacing: -0.01em; }

p { margin: 0; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 通用 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: .14em;
  color: var(--brand); text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--brand); border-radius: 2px; }

.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); margin: 14px 0 12px; }
.section-head p { color: var(--muted); font-size: 16.5px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .eyebrow::before { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: .22s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--brand); color: #fff; box-shadow: 0 8px 22px rgba(222, 85, 16, .28); }
.btn--primary:hover { background: var(--brand-600); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(222, 85, 16, .34); }
.btn--ghost { background: rgba(255, 255, 255, .7); color: var(--ink); border-color: var(--line); backdrop-filter: blur(6px); }
.btn--ghost:hover { border-color: var(--brand-300); color: var(--brand); transform: translateY(-2px); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: #000; transform: translateY(-2px); }
.btn--sm { padding: 9px 18px; font-size: 14px; }
.arrow { transition: transform .22s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- 顶部导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .84);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.header.is-stuck { border-bottom-color: var(--line); box-shadow: 0 4px 20px rgba(20, 23, 26, .05); }
.header .wrap { display: flex; align-items: center; gap: 28px; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand img { height: 38px; width: auto; }
.nav { display: flex; gap: 6px; margin-left: auto; }
.nav a {
  padding: 9px 14px; border-radius: 10px; font-size: 15px; font-weight: 500;
  color: var(--ink-2); transition: .2s;
}
.nav a:hover, .nav a.active { color: var(--brand); background: var(--brand-50); }
.header .btn { margin-left: 6px; }

.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 76px 0 96px; overflow: hidden; background: linear-gradient(180deg, #fff 0%, var(--brand-50) 100%); }
.hero__waves { position: absolute; inset: auto 0 -2px 0; width: 100%; height: 260px; opacity: .5; pointer-events: none; }
.hero__grid {
  position: relative; display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 56px; align-items: center;
}
.hero h1 { font-size: clamp(32px, 4.6vw, 54px); line-height: 1.18; margin: 18px 0 20px; }
.hero h1 .hl { color: var(--brand); position: relative; white-space: nowrap; }
.hero h1 .hl::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 11px;
  background: var(--brand-100); border-radius: 6px; z-index: -1;
}
.hero__lead { font-size: 17.5px; color: var(--muted); max-width: 540px; }
.hero__cta { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero__tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 34px; }
.tag {
  font-size: 13.5px; color: var(--ink-2); background: #fff; border: 1px solid var(--line);
  padding: 6px 14px; border-radius: 999px; box-shadow: var(--shadow-sm);
}
.hero__art { position: relative; display: flex; justify-content: center; }
.hero__art svg { width: 100%; max-width: 460px; filter: drop-shadow(0 30px 50px rgba(20, 23, 26, .16)); }
.hero__blob {
  position: absolute; width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(240, 122, 61, .22), rgba(222, 85, 16, .06) 62%, transparent 72%);
  z-index: -1;
}

/* ---------- 数据条 ---------- */
.stats { background: var(--bg-dark); color: #fff; }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 46px 24px; }
.stat { text-align: center; position: relative; }
.stat + .stat::before {
  content: ""; position: absolute; left: 0; top: 12%; height: 76%; width: 1px;
  background: rgba(255, 255, 255, .12);
}
.stat b { display: block; font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; letter-spacing: -0.02em; }
.stat b .u { font-size: .5em; font-weight: 700; color: var(--brand-400); margin-left: 3px; }
.stat span { color: rgba(255, 255, 255, .68); font-size: 14.5px; }

/* ---------- 产品 ---------- */
.products { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.pcard {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: .28s ease; position: relative;
}
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.pcard__media {
  position: relative; aspect-ratio: 16 / 10; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(150deg, var(--brand-50), #fff 70%);
  border-bottom: 1px solid var(--line);
}
.pcard__media img { width: 100%; height: 100%; object-fit: contain; padding: 16px; transition: transform .35s ease; }
.pcard:hover .pcard__media img { transform: scale(1.04); }
.pcard__badge {
  position: absolute; top: 16px; left: 16px; font-size: 12.5px; font-weight: 700;
  background: var(--brand); color: #fff; padding: 5px 12px; border-radius: 999px; letter-spacing: .02em;
}
.pcard__body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.pcard__model { font-size: 13px; font-weight: 700; color: var(--brand); letter-spacing: .08em; }
.pcard__body h3 { font-size: 21px; margin: 8px 0 10px; }
.pcard__body > p { color: var(--muted); font-size: 15px; }
.pcard__specs { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 9px; }
.pcard__specs li { position: relative; padding-left: 22px; font-size: 14.5px; color: var(--ink-2); }
.pcard__specs li::before {
  content: ""; position: absolute; left: 2px; top: 9px; width: 8px; height: 8px;
  border-radius: 50%; background: var(--brand-300); box-shadow: 0 0 0 3px var(--brand-50);
}
.pcard__foot { margin-top: 22px; padding-top: 18px; border-top: 1px dashed var(--line); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.pcard__foot .price { font-size: 13.5px; color: var(--muted); }
.pcard__foot .price b { color: var(--brand); font-size: 19px; }

/* ---------- 场景 ---------- */
.scenes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.scene {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 26px 24px; transition: .25s ease;
}
.scene:hover { border-color: var(--brand-300); transform: translateY(-4px); box-shadow: var(--shadow); }
.scene__ico {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  background: var(--brand-50); color: var(--brand); margin-bottom: 16px;
}
.scene h4 { font-size: 17px; margin-bottom: 8px; }
.scene p { color: var(--muted); font-size: 14.5px; }

/* ---------- 客户 ---------- */
.cases { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.case {
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 20px;
  background: #fff; font-size: 15px; font-weight: 600; color: var(--ink-2);
  display: flex; align-items: center; gap: 10px; transition: .22s;
}
.case:hover { border-color: var(--brand-300); color: var(--brand); background: var(--brand-50); }
.case::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); flex: none; }
.cases-note { margin-top: 22px; color: var(--muted-2); font-size: 14px; text-align: center; }

/* ---------- 关于 ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.about__text p + p { margin-top: 16px; }
.about__text { color: var(--ink-2); font-size: 16px; }
.about__badges { display: grid; gap: 14px; margin-top: 28px; }
.badge-row { display: flex; gap: 12px; align-items: flex-start; }
.badge-row .dot { width: 22px; height: 22px; border-radius: 50%; background: var(--brand-50); color: var(--brand); display: grid; place-items: center; font-size: 12px; font-weight: 700; flex: none; margin-top: 3px; }
.badge-row b { display: block; font-size: 15.5px; }
.badge-row span { color: var(--muted); font-size: 14.5px; }
.about__panel {
  background: linear-gradient(160deg, var(--bg-dark), #24292f);
  color: #fff; border-radius: var(--radius); padding: 34px 32px; box-shadow: var(--shadow-lg);
}
.about__panel h3 { font-size: 19px; margin-bottom: 18px; }
.about__panel ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.about__panel li { display: flex; gap: 12px; font-size: 15px; color: rgba(255, 255, 255, .85); }
.about__panel li b { color: #fff; }
.about__panel .num { color: var(--brand-400); font-weight: 800; font-variant-numeric: tabular-nums; flex: none; }

/* ---------- 联系 ---------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact__list { display: grid; gap: 20px; margin-top: 26px; }
.contact__item { display: flex; gap: 14px; }
.contact__item .ico { width: 40px; height: 40px; border-radius: 12px; background: var(--brand-50); color: var(--brand); display: grid; place-items: center; flex: none; }
.contact__item b { display: block; font-size: 15px; }
.contact__item span { color: var(--muted); font-size: 14.5px; }
.contact__card { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.contact__card h3 { font-size: 18px; margin-bottom: 6px; }
.contact__card > p { color: var(--muted); font-size: 14.5px; margin-bottom: 18px; }
.shop-links { display: grid; gap: 12px; }
.shop-link {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 15px 18px; font-weight: 600; font-size: 15px; transition: .22s;
}
.shop-link:hover { border-color: var(--brand-300); color: var(--brand); transform: translateX(3px); }
.shop-link small { display: block; font-weight: 400; color: var(--muted); font-size: 13px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-dark); color: rgba(255, 255, 255, .72); padding: 56px 0 30px; font-size: 14.5px; }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 34px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.footer__brand img { height: 40px; background: #fff; padding: 6px 12px; border-radius: 10px; }
.footer__brand p { margin-top: 16px; max-width: 340px; color: rgba(255, 255, 255, .55); font-size: 14px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer__col a, .footer__col span { display: block; color: rgba(255, 255, 255, .62); padding: 5px 0; transition: .2s; }
.footer__col a:hover { color: var(--brand-400); }
.footer__bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding-top: 24px; font-size: 13.5px; color: rgba(255, 255, 255, .5); }
.footer__bottom a { color: rgba(255, 255, 255, .68); }
.footer__bottom a:hover { color: var(--brand-400); text-decoration: underline; }
.icp { display: inline-flex; align-items: center; gap: 8px; }

/* ---------- 滚动出现 ---------- */
/* 默认可见；仅在 JS 可用时才做滚动出现动画（避免无 JS / 截图时内容不可见） */
.reveal { transition: opacity .7s ease, transform .7s ease; }
.js .reveal { opacity: 0; transform: translateY(22px); }
.js .reveal.in { opacity: 1; transform: none; }
@media print { .js .reveal { opacity: 1 !important; transform: none !important; } }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; gap: 36px; }
  .hero__art { order: -1; }
  .hero__art svg { max-width: 360px; }
  .products { grid-template-columns: 1fr 1fr; }
  .scenes { grid-template-columns: repeat(2, 1fr); }
  .cases { grid-template-columns: repeat(2, 1fr); }
  .about, .contact { grid-template-columns: 1fr; gap: 36px; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .nav { display: none; }
  .nav.open {
    display: flex; flex-direction: column; position: absolute; top: 74px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 12px; gap: 2px;
    box-shadow: var(--shadow);
  }
  .nav-toggle {
    display: inline-flex; margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--line);
    border-radius: 12px; background: #fff; align-items: center; justify-content: center; cursor: pointer;
  }
  .nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
    content: ""; display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; position: relative;
  }
  .nav-toggle span::before { position: absolute; top: -6px; }
  .nav-toggle span::after { position: absolute; top: 6px; }
  .header .btn { display: none; }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
  .stat + .stat::before { display: none; }
  .products, .scenes, .cases { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; gap: 28px; }
  .hero { padding: 48px 0 72px; }
}